OK. This is going waaaaaaaaay too fast. IMO, they need to play a few more story beats before there's even any talk of an engagement or marriage.

Yep. I actually don't mind the set up of Sami wanting and expecting a proposal because, well, it's Sami. The girl never met a wedding she didn't like. But it's a perfect opportunity for Everett to continue to be the rational one in their relationship and explain why they need to slow it down.